With the help of @blxckdreadful I've updated the older SuiceBomber plugin.
No more red painted insurgents. Damage is receded, default class is "bomber" so it works perfectly with my Theater/MOD "12 players ikir Tactical MOD":
Workshop link
The "bomber" class will explode at certain distance. If you are not using my theater I suggest to equip a new class with IED or only knife so the bomber will run towards players.
You can increase life of the bomber but keep that realistic as Insurgency is.
"sm_suicide_enabled" "1" // Enable bomber
"sm_suicide_bomber" "Bomber" // A class that will be suicide bomber
"sm_suicide_detonate_range" "120" // Max range to detonate. I recommend 125.
"sm_suicide_resist" "4" // Bomber health multiplier
"sm_suicide_delay" "1.1" // Delay before suicide